Garnett machine



May 24, 1927.

T. w. ALLEN GARNETT MACHINE Filed Jan. 1 1927 2 he ts-Sheet l May 24, 1927. i 1,630,158

T ALLEN 7 ffv Patented May 24, 1927,

UNITED STAT as PATENT" OFFICE.

THOMAS ALLEN, OF PHILADELPHIA. PENNSYLVANIA, AS'SIGNOR T0 FROCTOR & SCHWARTZ; INCORPGRA-TED, OF PHILADELPHIA, PENNSYLVANIA, A CORPORIL- TION or PENNSYLVANIA;

eAnnn'r'r MACHINE.

Application filed January 19, 1927. SrialNo. 162,163.

()ne object of my invention is to so arrange the teeth of the cylinders of a Garnett machine that coarse fibrous woven material be readily reduced to fibres.

ie're'totore, it has been difficult to separate the fibres of the warps or wetts or? the "fa Y whei-i the threads extended parallel with the teeth, V as the longitudinal threads are removed from the fabric and pass into the space between the teeth without being" acted upon by the teeth.

By'my invention, all" threads of the fabric are separatedin the fibres.

A further object of the invention is to provide means for holding the toothed cylinders: in alignment.

In the accompanying drawings:

FigL 1 a. diagrammatic side view of a Garnett machine to which my invention is applied V Fig. 2 is an enlarged side view showing a stripper andtwo workers;

3 is a sectional view on the line 3 3, Fig. 2, showing the teeth and the bearings only in section;

Fig. 4 is an enlarged view showing the relation of the teeth of two cylinders;

Fig. 5 is a sectional View on the line 55, Fin. 1; and

Fig. 6 is a perspective view showing two tooth-strips mounted on a cylinder.

Referring to the drawings, 1 is the main cylinder, 2 are the strippers, and 3 are the workers of a Garnett machine. The other cylinders are common to this type of machine.

In the enlarged views 2 and 3 are shown the stripper and worker cylinders 2 and 3, mounted respectively upon shafts 4 and 5, adapted to suitable bearings.

On the end of the shaft/4 is a gear wheel' 6 which meshes with gear-wheels 7 on the shafts 5, all three gear-wheels being of the same diameter in the present instance. The gear-wheel 6 is flanged as at 8 and the flanges overlap the gear-wheels 7-7, keeping all three gear-wheels and their cylinders in longitudinal alignment.

In the present instance, the gear-wheel 6 is made separate from the disks which form the flanges 8, while the flange-forming disks are secured to the gear-wheel 6 by bolts 9.

Referring to Figs. 1 and 5, 2 is the'stripper cylinder, and 3' is one of the worker cylinders. Each cylinder has. a; spiral groove 10 cut therein, and the convolutions of the grooves are a given distance apart Mount ed inthe groove 01' the stripper cyiinder 9. is a toothed strip 11. The teeth 12 otthe strip are long; and tapered as shown in the drawings, and are thicker at the base than at the point. The base 18 of the strip is wider than the teeth,- the teeth being set to one side of the strip soto leave a; shoutder' 1-4 In thepresentinstance, one side of each. tooth 12 is at right angles to the base of the-tooth, while the other side is tapered from the shoulder 14 to the point.

The long teeth 12 of the stripper. extend within the peripheral line of the" teeth of the worker, as clearly shown in Fig... 5,but are spaced therefrom as: shown in the same figure.

It will he noticed that the base of the tooth-strip is of a greater thickness than the depth of the groove 10, so that the shoulder 14 is some distance from the face of the cylinder. a

Located between the convolutions of the tooth-strip 11 is another tooth-strip 15, the base 16 of which is not as thick as the base 13 of the tooth strip 11, and when located in the space between the convolutions of the V strip 11, the shoulder on the tooth. 16 is on the same plane as the shoulder of the strip 11, as clearly shown in Fig. 5. The teeth 17 of the strip 15 are short and are substantially of the same shape as the longer teeth 12 of the strip 11, as clearly shown in Fig. 6. J The teeth 17 extend close to the ends of the long teeth of the strip 11, so that any strands which would ordinarily pass longitudinally through the space between the two long teeth would be engaged by the short teethof one cylinder and the long teeth of the other cylinder, and would be separated into fibrous form by the two sets of teeth.

The two toothed wires of the intersecting rolls are wound in opposite directions, that is, the teeth of the two strips of the stripper are woundleft-handed. while the strips on the workers are wound right-handed, each roll makingthe same number of turns, and consequentlythe stripper will not interfere,

the longitudinal movement of the several rolls beingprevented by the flanges 8 on the gear-wheel 6 mentioned above.

I claim 1. The combination in a Garnett machine, of two cylinders, each cylinder having two sets of teeth, one set of: teeth being of less height than the teeth of the other cylinder, and the teeth of one cylinder extending into the spaces between the long teeth of the other cylinder.

2. The combination in a Garnett machine, of two cylinders, each cylinder having Garnett teeth thereon arranged in spiral form, the teeth of one cylinder being wound as a. right-hand spiral, and the teeth of the other cylinder be ng wound as a left-hand spiral, the teeth of one cylinder extending into spaces between the teeth of the other cylin ders: means tor driving the two cylinders; and means for keeping the cylinders in longitndinal alignment.

2'). The combination ol. a Garnett cylinder. having a spiral groove therein: a toothed strip located in the groove and forming a spiral whose convolutions are substantially parallel; and a second toothed strip located in the space between the convolutions of the first strip.

4-. The combinati n in a Garn-ett cylinder. having a spiral groove therein; a toothed strip located in the groove and forming a spiral whose convolutions are substantially parallel; and a second toothed strip located on the cylinder in the spaces between the convolutions of the first strip, the teeth of the second strip being of less height than those of the first strip.

5. The combination of a Garnett eylindm', having a spiral groove therein; a toothed strip, the base of said strip being located in the groove, one side of the strip being at right angles to the base of the groove, the other side being shouldered and having teeth tapered from the shoulder to the point; and a second strip located between the convolutions of the first strip and having a base and tooth formed similar to the first strip, the teeth of the second strip being less in height than those of the second strip.

(3. The combination in a ('rarnctt machine, of two cylinders. each cylinder having a spiral groove therein. one of said grooves being a right-hand spiral, and the groove of the other cylinder being a left-hand spiral, the convolntions ot the grooves being spaced apart a given distance; a toothed strip mounted in the groove of each cylinder. said strip having long teeth; and a second toothed strip located in the spaces between the eonvolntions ot the first strip and resting on the cylinder. the teeth of said second strip being less in height than those of the. second teeth. the teeth of the cylinders being arranged so that the long teeth of one cylinder will extend into the peripheral line of the teeth of the other cylinder and in close proximity to the short teeth of the said short cylinder.

THOMAS lV. ALLEN. 

